Calculate the average of all columns that start with 'sales_' in the sales_data table, and exclude the 'sales_other' column from the calculation.
CREATE TABLE sales_data (sales_q1 INTEGER, sales_q2 INTEGER, sales_other INTEGER); INSERT INTO sales_data (sales_q1, sales_q2, sales_other) VALUES (100, 200, 50), (150, 250, 75), (200, 300, 100);
```sql
SELECT AVG(sales_q1) AS avg_sales_q1, AVG(sales_q2) AS avg_sales_q2
FROM sales_data;
```
```sql
SELECT AVG(sales_q1) AS avg_sales_q1, AVG(sales_q2) AS avg_sales_q2
FROM sales_data;
```